From: Eric Dumazet <eduma...@google.com>
Date: Fri, 29 May 2020 11:32:25 -0700
> syzbot was able to trigger a crash after using an ISDN socket
> and fool l2tp.
>
> Fix this by making sure the UDP socket is of the proper family.
...
> Fixes: 6b9f34239b00 ("l2tp: fix races in tunnel creation")
> Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp
> parts")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Cc: James Chapman <jchap...@katalix.com>
> Cc: Guillaume Nault <gna...@redhat.com>
> Reported-by: syzbot <syzkal...@googlegroups.com>
Applied and queued up for -stable, thanks.
